Table 4.
Correlation of EqCO2 and key variables of pulmonary function.
| FEV1% | FEV1/FVC % | DLCO% | DLCO/VA% | RV/TLC | ||
|---|---|---|---|---|---|---|
| EqCO2rest | Pearson correlation | −0.277∗ | −0.311∗ | −0.408∗∗ | −0.390∗∗ | 0.289∗ |
| P-value | 0.024 | 0.011 | 0.001 | 0.002 | 0.023 | |
| n | 66 | 66 | 63 | 63 | 62 | |
|
| ||||||
| EqCO2at | Pearson correlation | −0.224 | −0.287∗ | −0.462∗∗ | −0.392∗∗ | 0.258∗ |
| P-value | 0.070 | 0.020 | 0.000 | 0.002 | 0.043 | |
| n | 66 | 66 | 63 | 63 | 62 | |
|
| ||||||
| EqCO2max ∗ | Pearson correlation | −0.024 | −0.086 | −0.285∗ | −0.245∗ | 0.095 |
| P-value | 0.837 | 0.468 | 0.017 | 0.041 | 0.436 | |
| n | 73 | 73 | 70 | 70 | 69 | |
∗ significant difference, P < 0.05.